低温余热驱动的热电复合系统优化设计

被引：6

作者：

钟芬

吴竺

朱彤

高乃平

机构：

[1] 同济大学机械与能源工程学院

来源：

中国电机工程学报 | 2016年 / 36卷 / 12期

关键词：

分布式能源; 有机朗肯循环(ORC); 热泵循环(HPC); 低温余热; 产热量; 能量利用率; R134a; R245fa;

D O I：

10.13334/j.0258-8013.pcsee.152534

中图分类号：

TK115 [];

学科分类号：

摘要：

基于热力学定律,对低温余热驱动的有机朗肯循环(ORC)与热泵循环(HPC)组成的复合系统进行了分析计算,并对不同状态参数对系统性能的影响进行了讨论及优化设计。研究表明:在余热资源温度为368.15K、流量为1kg/s的标准运行工况条件下,系统的高品位产热量为27.56k W,能量利用率为10.13%,此时系统最佳的ORC蒸发温度为335.15K使得系统的能量利用率最高,高温产热量最大;而ORC系统冷凝温度的提高将降低系统的高温产热量;同时研究发现:膨胀机等熵效率的提升对复合系统产热量的增加有较明显的作用。

引用

页码：3176 / 3184

页数：9

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